That mean the your ESP32 was register successful as ESPrtk and ready to load the firmware file to it.
What you need is to load the APP.bin ESPrtk file to ESPrtk then open at baudrate 230400 .
Check the guide here :
http://esprtk.wap.sh/tt/t3/register_update_firmware.html
Download lasted firmware here :
http://esprtk.wap.sh/firmware_revision.html
Anyway here is our email support :
- List item contact@esprtk.com
- List item esprtk@gmail.com